| abstract |
The invention relates to a method for the distillative recovery of TDA from an educt flow containing TDA, high boilers, and low boilers in a partition column in which a partition is disposed in the longitudinal direction of the column so as to form a common upper column zone (2), a common bottom column zone (3), a feeding section (4) that encompasses a rectification section (5) and a stripping section (6), and a withdrawal section (7) encompassing a rectification section (9) and a stripping section (8). The inventive method comprises the following steps: A) the educt flow (13) is delivered to the feeding section (4) of the partition column (1); B) a low boiler fraction is discharged via the top (11) of the column; C) TDA is discharged via a lateral discharge point (14) located in the withdrawal section (7) of the partition column (1); D) a high boiler fraction is discharged via the bottom (12) of the column. |